CircleCI: Make the T440p depend on Librem boards

This change will improve build times by allowing the T440p to share the
Coreboot 4.17 cache with the Librem boards. Once we update the other
ThinkPad boards to use Coreboot 4.19, we'll make the T440p depend on the
X230 again.

Co-authored-by: Thierry Laurion <insurgo@riseup.net>

.circleci/config.yml

@@ -217,7 +217,7 @@ workflows:
           requires:
             - prep_env
 
-      # Coreboot 4.15
+      # Coreboot 4.17
       - build_and_persist:
           name: librem_14
           target: librem_14
@@ -234,8 +234,7 @@ workflows:
           requires:
             - prep_env
 
-      #Cache one workspace per Coreboot version, ideally the boards including the highest number of modules, since not rebuilt across builds.
-      #Below, 4.11, 4.13, 4.17
+      #Cache one workspace per architecture. Make sure workspace caches are chainloaded and the last in chain for an arch is saved.
       - save_cache:
           requires:
             - librem_14
@@ -434,14 +433,14 @@ workflows:
           target: t440p-maximized
           subcommand: ""
           requires:
-            - x230-hotp-maximized
+            - librem_14
 
       - build:
           name: t440p-hotp-maximized
           target: t440p-hotp-maximized
           subcommand: ""
           requires:
-            - x230-hotp-maximized
+            - librem_14
 
       - build:
           name: qemu-coreboot